.RDF File Extension

Document written in the Resource Description Framework language; used for representing information about resources on the Web; contains information about a website in a structured format called metadata; may include a site map, an updates log, page descriptions, and keywords.

RDF files are also used by Mozilla Web browsers, such as Firefox, to store settings for windows and toolbar configurations.

Spreadsheet containing report output generated by a database or spreadsheet program such as Oracle or Microsoft Excel.

Disc image created with PowerProducer, a video capture and authoring program; contains all the content of a movie project, including special effects and settings; saved in a compressed format and may be burned to a disc for storage so it can be opened at a later time.